ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.

The Stress Corrosion Crack (SCC) Growth Rate in Sensitized Alloy 600 in Thiosulfate Solution. -The effect of the applied potential on the SCC growth rate of sensitized Alloy 600 in 0.01 M Na2S2O3 solution at 25 • C is studied by a constant deflection technique using precracked samples. With increasing applied potential in the anodic passive region the intergranular SCC growth rate increases while the critical stress intensity factor for SCC (KISCC) decreases. At +500 mV in the transpassive potential region a retardation in the crack growth rate is possibly due to crack tip blunting resulting from fast dissolution around the crack tip. -(TSAI, W.-T.; SHEU, M.-J.; LEE, J.-T.;

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.

The Effect of Heat Treatment and Applied Potential on the Stress Corrosion Cracking (SCC) of Alloy 600 in Thiosulfate Solutionis investigated by using electrochemical potentiokinetic reactivation tests and modified Huey tests. Stabilization heat treatment (990 . degree.C/5 min + 705 • C/15 h) induces semicontinuous grain boundary carbide precipitation of Alloy 600 which causes a significant decrease in the degree of sensitization. The anodic polarization behavior of the alloy in 0.01 M Na2S2O3 solution at 95 • C is mainly associated with Cr in the alloy. As shown from the polarization curves, exhibiting 2 anodic peaks (-500 and +100 mV (SCE)) independent of heat treatment, the alloy passivates in thiosulfate solution and both the sensitized and the stabilized alloy exhibit intergranular stress corrosion cracking under applied potential conditions. The severity of this cracking depends upon the degree of sensitization. -(TSAI, M.-C.; TSAI, W.-T.; LEE, J.-T.; Corros.

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.